Grinder Basics

Even though grinders are a part of our demolition tool series, grinders aren't used solely for demolition projects. Commonly used by people who work with metal, grinders are an important power tool for mechanics, welders, and even concrete workers.

Grinders come in three basic styles:

• Straight grinders have the motor inline with the grinding wheel, while angle grinders have the grinding wheel arranged perpendicular to the motor.
  
• Angle grinders are more popular than straight grinders because they have a side handle that makes it significantly easier to control and much safer. For you southpaws out there, most angle grinders allow you to move the side handle from the right side to the left side.
• Bench grinders are a special type of grinder designed to be placed (or mounted permanently) on a work bench and are one of the most versatile shop tools you can own.

All grinders use an abrasive disc or wheel that can be replaced when worn out. There are many different types of discs or wheels designed to accomplish different tasks, such as grinding, sanding, polishing or buffing.

Both straight and angle grinders are available in both cordless or AC powered models. AC powered grinders are widely preferred because of their superior power and endurance. That's not to say cordless grinders aren't useful-they are perfect for small grinding jobs where it's not worth the time it takes to untangle an extension cord. As they are designed to be stationary, bench grinders are always AC powered.

Let's examine a few popular grinders.